Dipper-tooth.



M. E. REISINGER.

DIFFER TOOTH.

APPLICATION FILED APR-14,1915.

Patented Dec. 26,1916.

MOSES E. REISINGER, OF OLIVEBBIDGE, NEW YORK.

Specification of Letters Patent.

Patented Dec.. 26, 1916.

Application led April 14, 1915. Serial No. 21,347.

To all 'whom t may concern.' Y

Be it known that I, Mosns E. REISINGER, a citizen of the United States, residing at Olivebridge, in the county of Ulster and State of New York, have invented a new and useful Dipper-Tooth; and I do hereby declare the following to be a full, clear, and exact descriptionof the invention, such as willenable others skilled in the art to which it appertains to make and use the same.

This invention relates to the art of dippers and buckets for excavating machines, and particularly yto an improved tooth, which not only acts as the means of cutting into the earth orthe material to ybe excavated, but also serves to protect the lip orV biting edge of the bucket or dipper against wear.

Another object of the invention vis to provide a renewable detachable tooth, the lower or under edge. of which is straight, while i the upper edge is gradually .curved downwardly toward the lower straight edge of the tooth, thereby forming a tooth, which, in sideelevation, is tapering, so that the dipper or bucket in lowering at a substantially 45 degree angle, causes the tooth to continually wear to a point,vas indicated by the dotted lines in Fig. 2, a, b, c, d and e.

Another object of the invention is to providev a renewable detachable tooth kpoint.

having an emproved joint or: connection with the tooth body, of such construction, as will obviate the use of bolts and considerable hammering of the parts, in oining the tooth point and the tooth body.

Another object of the invention is to provide an improved joint between the tooth body and the renewable tooth point, so that the parts will wedge securely together, there being means at both ends of the joint to prevent lateral distortion or displacement of the part. l

A further object of the invention is to provide a key, preferably in the form of a tapering pin to engage correspondingly constructed or shaped recesses of adjacent faces of the engaging parts, to prevent displacement of the renewable detachable tooth point.

In practical fields the details of construotion may necessitate alterations, falling within the scope of what is claimed.

The invention comprises further features and combination of parts, as hereinafter set forth, shown in the drawings and claimed.

1n .the drawings :--Fig. l is a view in perspective of a dipper or bucket of an excavating machine or the like. Fig. 2 is an enlarged detail Vperspective view of the renewable Vdetachable tooth point, showing the same about to be connected to the tooth body. Fig. 3 yis a longitudinal sectional view on line 3 3 of Fig. 2, showing the renewable or detachable tooth `point connect.- ed to the tooth body. Fig. 4 is a sectional view on line 4-4 of Fig. 3. Fig. 5 is a. transverse sectional view on lineV 5-5 of Fig. 3.

Referring more especially to the drawi ings, 1l designates a portion of a conventional yform of-dipper stick or boom of an excavating machine (not shown), and connectedto the stick or boom is a conventional form of excavating dipper or bucket 2 provided with the ,usual opening closure 3 hinged at 4. Carried by the portion 5 of the dipper .or bucket, for not only cutting into the earth, but also for protecting the lip or biting edge of the shovel, dipper or bucket, is a plurality of teeth 6, each of which consists of the renewable or detachable toothpoint 7 and the'tooth body 8.

lThe tooth body 8 comprises an elongated tapering shank 9,*whioh is fastened to the inner face of ythe portionv of the dipper, by .virtue of the rivets 10 and 11. Forming an integral part of the tooth body adjacent its `under edge as shown at 122is an extension 13, which isY spaced apart from the shank 9 suiliciently as shown, so that the portion 5 of the dipper may engage between the extension and the shank 9. In other words, the extension 13 engages the under surface of the lportion 5v of the dipper or bucket, and is riveted in place by the rivets 10.

rlhe forward portion of the body of the tooth is reduced as shown at 14, which reduced portion 14has edges 15 which taper or converge toward each other. This tapering part 16 of the reduced portion 14 merges forwardly into an extension 17 having upper and lower faces 18, which are opposite one lanother and substantially in parallelism. The upper face 18 ofthe extension 17 is `provided with a transverse tapering groove 19,- which is substantially semi-circular in cross section. Beyond the extension 17 and forming an integral part thereof is an auxiliary tapering extension or pin 20. Adjacent l duced part 14 of the body and being oppositely disposed are tongues or ribs 22. The tooth point is elongated in contour, and its lower surface 0r edge 23 is perfectly straight, whereasV its upper edge or face 24 curves forwardly and downwardly toward the lower face 23, thereby forming a tooth point, which, in side elevation, is tapering. As indicated by the dotted lines a, b, c, d, and e in Fig. 2, it is to be noted that the tooth eoint enters the `Oround or earth substan- V27 adjoining the wall 28 of the crotch 'of the bifurcation are opposite each other and are in parallelism substantially. These faces l30 and 31 merge into the faces 32 and 33, which diverge, and merge into additional faces 34 and 35, directlyopposite each other Yand substantially inpara-llelism. These faces 30 and 31, 32 and 33, `and 34 and 35 correspond vto and fit the faces or edges 18, 15, and 15a of the reduced portion 14 of the tooth body,

y and these faces wedge together, not only to obviate lateral movement of the joined parts, but to a great degree to prevent longitudinal movement ofv the .j oined parts. The face 31 "of the upper fork of the tooth point is providedwith a transverse groove 37, tapering corresponding to the groove 19 and substantially semicircular in cross' section, so that when the grooves 19 and 37 are in registration, they will form -a tapering aperture, to receive a correspondingly tapered Vkey or pin 38, to Vassist materially in locking the tooth point to the tooth body. The forks 26 and 27 at their free ends are provided with recesses 40 and`41, to receive the tongues vor ribs 22 of the reduced portion 14 of the toothed body, thereby further preventing lateral Ydisplacement of the forks of the tooth point.

lThe faces 15a of the reduced portion 14 are Yconcaved slightly and'thefaces 15 are `slightly conveXed, in order to form the shoulders 14a. ln the drawings the shoulders 14a are exaggerated, but in reality or inpractice are extremelyslight, almost hardly noticeable, owing to the conveXity and concavity of the surfaces or faces 15EL and15 being eX- tremely slight. Thev faces 32, 33, 34 and'35 Vare correspondingly extremely slight, so that the shoulders 14b are likewise extremely slight, so that when the tooth point is connected to the tooth body, the forks of the Ytooth point will wedge'yieldablyapart sufiiciently, that is, when the surfaces 15, Vand 32 Yand 33 contact, so that the shoulders 14ar and `14b will interengage. To cause the shoulders to interengage, it is necessary to forcelor drive the tooth point sufliciently,

to cause the forks to spread yieldably apart torengage the upper and lowerportions of Vthe reduced part of the body, whereby the shoulders Vwill interengage. The interengagement of the shoulders prevents longitudinal vmovement or displacement of the tooth point in case the "key or pin 38 may become temporarily moved or detached; The interengaging concavities and conveXities ofthe upper and lower faces of said rey duced portion 14 and the adjacent faces of said forks, constitute means to also preventV lateral movement of said forks, provided the tongues and the lbifurcations 'of said Y forks are dispensed with; f

V1n order to remove the tooth point when worn or broken the opposite side faces thereof are provided with depressions' 44, in

which'V one end of a tool may engage, so that l thetooth point may be hammered or forced if off the tooth body.`

From the foregoing in connection withthe accompanying drawings, it is to be noted that there has been devised asimple, eflicient and desirable renewable detachable tooth point, which may be constructed of any suitable tempered metal, and one which hasbeen pensive yto manufacture.

The invention having beenset is claimed as new anduseful is j 1. VA dipper tooth, comprising a tooth body connected to the clipper, saidbody having a reduced portion, the upper and lower found durable and practical in use, and ineX-` faces of the reduced portion being concaved,

forming shoulders, ya tooth point bifurcated correspondingly to and fitting the reduced lpart of the body, to provide oppositelydisposed forks, the adjacent faces of said forks forth, what i being conveXed to form shoulde'rsto interengage with the shoulders of the ,reduced portion of the body to'hold thel tooth point to the body and to prevent .longitudinal movement of the point, and a cross key fasteningbetween one of the inner faces vof one of the forks and one of the outer faces of the reduced portions to additionally 4hold -the tooth point to the reduced portion.

2. A dipper tooth, comprisingl a tooth body having a reduced portion, the upper and lower faces of which are concaved,

forming shoulders, a toothpointbifurcated l correspondingly to and fitting the reduced part of the body, to provide oppositely disposed forks, the adjacent faces of said .forks being conveXed, forming shoulders to interengage with the `shoulders of the reduced portions of the body to hold the tooth point lto lthe body and to prevent longitudinal movement of the point, said upper and lower facesY of the reduced' portion of the Vbody* and the extremities of the forks having interengaging means to prevent lateral movements of said forks.

3. A dipper tooth, comprising a tooth body having a reduced portion, the upper and lower faces of which are conceived, forming shoulders, a tooth point bifurcated correspondingly to and fitting the reduced part of the body, to provide oppositely disposed forks, the adjacent faces of Said forks being conveXed, forming shoulders to interengage with the shoulders of the reduced portions of the body to hold the tooth point to the body and to prevent longitudinal movement Copies of this patent may be obtained for ve of the point, said concavties and convexivties preventing lateral movement of said forks, the outer end of the reduced portion and the crotch of the bifurcation of the tooth point having interengaging means to prevent lateral movement of the outer end of the reduced portion.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MOSES E. REISINGER.

Vitnesses:

PHILIP A. H. TERRELL, ROBERT A. BoswELL.

cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

